Car-door signal



E. SANDERS.

CAR DOOR SIGNAL.

APPLICATION FILED MAR. 15. 1918.

Patented Feb. 3, 1920.

his

ERNEST SANDERS, OF CHICAGO, ILLIN'CIIS.

CARQDOOR SIGNAL.

Specification of Letters Patent.

Patented Feb. 3, 1920.

Application filed March 15, 1918. Serial No. 222,785;

To aZZ whom it may concern:

Be it known that I, ERNEST SANDERS, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Ellinois, have invented. certain new and useful Lnproveinents in Car-Door Signals, of which the following, when taken in connection with the drawing acconipanylng and forming a part hereof, is a specification.

This invention relates to means whereby, when a freight car is connected up to a train which is provided with air brake equipment and said equipment is put into operable condition prior to the removal of said car from a sidetrack, warehouse, dock, or other loading or unloading place, an alarm will be given and brakes Will be applied in case the closing of the side doors of said car is not effected, either through negligence or otherwise.

In the drawing which illustrates a construction embodying the invention,

Figure 1, is a vertical section of one side of a freight car, showing the door of the car in end elevation with said construction installed in said car.

Fig. 2, is a front elevation of a portion of one side of a car and door, with said construction installed therein.

Fig. 3, is a vertical section of a valve forming an element of said installation on line 3-3 of Fig. 4c viewed in the direction indicated by the arrows and Fig. 4 is a vertical section of said valve on line 44: of Fig. 3 viewed in the direction indicated by the arrows.

A reference character applied to designate a given part indicates said part throughout the several figures of the drawing, Wherever the same appears.

A, indicates the side of a car. B indicates a door. C, represents a horizontal pipe in communication at the inlet end thereof with the train pipe of an air brake system; D an L, and E a vertical pipe or conduit. F, indicates a signal which is sounded by the passage of air therethrough; G a valve body; H a lever arranged to unseat the valve g of valve body G, and I a roller or pulley in lever H, rotatably mounted on pin 2'. Valve body G is provlded with the plug G having screw threads G" to permit its removal when the valve seat (9), is to be ground. represents a valve which coact with valve seat 9, and 9 represents the stem of valve g. The lever H is pivotally mounted on pin 72. in the standard J i one of which is represented on the right hand of Fig. 4-, as viewed. Said standards J in which the lever H is pivotally mounted as last above set forth are duplicates of the standards which are illustrated in Fig. 3 of the drawing, d one thereof is illus trated on the right hand of said Fig. 4. All of said standards J are illustrated as integral with the valve body G. The lever H is provided with slot it, and it represents a pin which is mounted in the standards J which are illustrated in Fig. 3 so as to extend through the slot 71,. The purpose of this slot 72. and pin it is to limit the movement of lever H and pin it. Stein g" is pivotally connected to lever H by means of the pin 71. Lever H is yieldingly held in a raised position by spring is and said spring is mounted on the projections j between standards J. The projections j are illustrated as integral with valve body G. Valve body Gr is provided at its ends with screw threads L which are indicated in Fig. 3 of the drawing and the pipe E is provided with corre sponding screw threads'which are indicated by the lines lettered e in Fig. l. The inlet to the valve body is indicated in Fig. 3, by the arrow which is lettered Z and the outlet by arrow which is lettered Z.

The construction of the valve which is illustrated which is adopted by me to obviate the necessity of packing as by an ordinary gland, the pressure of the train pipe being against said valve tends to hold it on its seat and when valves open a slight leakage around the stem 9 is immaterial as the application of the brakes which is caused by the flow of air through the conduits C, E and signal F is augmented by any such flow and at all times sufficient air will flow through signal F to sound the same.

The operation of the device is, when a door B is opened it contacts with roller I, forcing the lever H downward, as viewed in Figs. 3 and 4, thereby forcing the valve 9 off its seat 9 against the pressure of air, (the air brake equipment being in operative condition) I claim:

1. In combination with a pipe in co1nmunication with the train pipe of a car, a

valve interposed in said pipe, and a signal on the discharge end of said pipe, said valve comprising a. va ve body, a duplicate set of standards to said body, a lever mounted between one or" said sets of standards and extending between the other of said sets, pins in said standards, one of said pins arranged to form the fulcrum of said lever and the other to limit the travel thereof, means to yieldingly hold said lever in a normal position, a valve seat in said body and a valve co-acting with said seat, and means to join said valve and said lever to seat said valve when said lever is in its normal position, said lever movable against said yieldingly holding means to unseat said valve.

2. l'Che combination of a signal, a conduit arranged to form an air passageway and adapted to be installed on a railroad car in communication with the train pipe of the air brake equipment of said car, and in communication with said signal, in combination with'a valve body interposed in said conduit, said valve body positioned adjacent to a side door of said car and comprising standards to said body and a valve seat insaid body, an operable lever between said standards, one end of sa1d lever being fulcrumed on a pivot between two, of said standards and the other end in the path of movement of said door, means between the other of said standards to limit the movement of said lever, a valve arranged to coact with said seat, means to join said valve and lever and means to yieldingly hold said lever in normal position with said valve seated.

3. A signal, a valve and acommunicating passage way between said valve and said signal, in combination with a valve consist ing of a shell having a partition therein and standards thereon, said partition provided with an aperture and a valve seat thereto and said standards arranged in pairs, a lever tulcrumed between one of said pairs and means between the other of said pairs to limit the travel of said lever, a valve attached to said lever arranged to co-act with said seat, means to yieldingly hold said le ver in normal position with said valve seated, and a roller rotatably mounted on the free end of said lever.

' ERNEST SANDERS.

In the presence of Onannns TURNER BROW'N, E. A. NiNonELL. 

